I have done some reading in the past on the whole brine shrimp thing. I had an article bookmarked that you may want to read. I personally didn't like the mess they made in my tank when I did the frozen once. I chucked out the rest. YUCK. But this article was interesting for perhaps determining some of the more effective feedings out there. I think the most interesting part was on the calcium because of the other post here about the potential calcium deficiency.